For some in-depth info on shoe-shining (aka backhitching), which affects
the performance of many different kinds of tape drives (including DDS,
DLT, Mammoth, and others), check out
http://www.vxa.com/tour/tour2-home.html
If you have Real streaming video, you'll be able to see some video
footage of actual backhitching on this page. We put this together at
Ecrix a couple of years ago... Of course the point is that Ecrix's VXA
drives don't do this.
- Frank Saab
Ecrix
[EMAIL PROTECTED]
> Subject: Re: Purchasing a new system (tape drive performance)
> From: "Douglas K Wyman" <[EMAIL PROTECTED]>
> Date: Fri, 26 Jan 2001 10:57:08 -0600
>
> The loss in capacity comes from the drive's attempt to continue tape
> motion while waiting for new data to arrive in the write buffer.
> No data is recorded while the tape continues to move forward.
> ...
>
> The wear-and-tear effect of tape repositioning (aka "shoe shining") is
> the predominant factor in the differences in drive reliability and
> performance observed by different users.
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